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    • 1. 发明申请
    • VIBRATION SWITCH AND PORTABLE MOTOR-DRIVEN DEVICE WITH IT
    • 振动开关和便携式电机驱动装置
    • WO1995032514A1
    • 1995-11-30
    • PCT/JP1994002226
    • 1994-12-27
    • NITTO KOHKI CO., LTD.FUKUDA, KenjiASANO, Osamu
    • NITTO KOHKI CO., LTD.
    • H01H35/02
    • H01H35/14B25F5/006B25H1/0071F16P3/00H01H35/144
    • A vibration switch (10) is constituted by assembling discoid electrodes (11 and 12) having aligned projecting parts (16) on their internal surfaces together at a prescribed interval and putting a spherical body (13) in the space (21) between the electrodes (11 and 12) so that the electrodes (11 and 12) can be electrically connected to each other when the switch (10) vibrates or rolls. A portable motor-driven device provided with such a switch (10) is constituted in such a manner that the switch (10) is attached to a frame (1). When a portable power tool (4) is apt to roll or tilt sideways due to an excessive load while the tool (4) is used to cut a material, the switch (10) is turned on and the power supply to the controller (6) of the tool (4) is interrupted to immediately stop a tool rotating motor (4M) or feeding motor (5M), even though the tool (4) is used at any angle.
    • 振动开关(10)通过在其内表面上以规定的间隔组装具有对准的突出部分(16)的盘状电极(11和12)并将球体(13)放置在电极 (11和12),使得当开关(10)振动或滚动时,电极(11和12)可彼此电连接。 设置有这种开关(10)的便携式电动机驱动装置以使开关(10)附接到框架(1)的方式构成。 当便携式电动工具(4)在工具(4)用于切割材料时由于过大的负载而倾向于侧向倾斜或倾斜时,开关(10)被接通,并且向控制器(6)供电 )工具(4)被中断以立即停止工具旋转马达(4M)或进给马达(5M),即使工具(4)以任何角度使用。